good thread, and with some folks i've gotten PMs from about advice for products (dont know why they're PMing me!) i tell them the same thing. If you're going to work lots of exotic / picky owners, then MAYBE i can justify it. outside of that......
Buy a 32oz bottle of ONR. dilution for clay lube is 2 oz per gallon. Your 16 dollar purchase of ONR just net you 16 GALLONS of clay lube.
Hyper dressing. Sure it's a little pricey - but now you have something for engine bays, wheel wells, tires, and trim.
APC/degreasers: already covered.
high priced waxes are luxury items. Not needed or necessary.
As long as someone understands this - if they want to buy specialty items, so be it. Just don't get mad at those that save twice as much money as you...